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Footprint, delta and CVD: know what is counted
Positive delta can appear while price falls. The numbers are useful only when their meaning is clear.
Read aggressor-side volume without confusing it with money flow or participant identity.
A footprint organizes traded activity at price within a bar. A common delta is ask-traded volume minus bid-traded volume, using the feed's classification rules.
CVD accumulates these differences from a chosen start or reset. Changing the session, reset, aggregation or feed can change the displayed path.
Every completed trade has both a buyer and seller. Positive delta means more classified aggressive buying volume, not that the market had more buyers than sellers or gained that amount of capital.
Price can fail to rise despite positive delta when passive selling meets aggressive buying. That suggests a question about response, not proof of a specific manipulator.
Let’s work through it
- Identify the data method
- Check the reset point
- Compare delta with price response
Let’s use numbers · hypothetical example
Ask-traded 600 units minus bid-traded 400 gives delta+200 with total volume 1,000. A next bar can still close lower; delta alone does not establish direction or a guaranteed divergence trade.
Easy mistakes to watch for
- Delta equals net cash inflow
- Positive delta guarantees a rise
- Different feeds must match
Keep in mind
Some platforms estimate aggression from lower-timeframe price changes rather than true bid/ask trade data. Spot Forex data is venue-limited.
Your turn
Calculate three bar deltas and cumulative total, then restart the accumulation halfway. Explain the change.
A quick check before we move on
With 600 at ask and 400 at bid, what is delta?
- +1,000
- −200
- +200
Check answer
+200 Under ask-minus-bid convention,600−400=+200. Total traded volume remains 1,000.
Sources and further reading
- www.sierrachart.com/index.php
- www.tradingview.com/support/solutions/43000726164-volume-footprint-charts-a-complete-guide/
Content reviewed: 29 October 2026
Educational material with hypothetical examples. Trading can cause substantial losses. A course, pattern, stop order or past result cannot guarantee a profit or limit every loss. Practise in simulation and check current rules and product terms in your jurisdiction.
